Grizzly bears are skilled fishermen, especially along Alaska’s southern coast in places like Katmai National Park where they famously feast on seasonal salmon runs, with dominant males catching up to 30 fish in a single day.

Inland grizzlies, like those in the Greater Yellowstone Ecosystem (which includes Grand Teton National Park) don’t have the same access to marine-based food. Their diets are typically composed of about 67% plants, 15% invertebrates, 11% mammals, and the remaining 7% are comprised of fish and fungi.

Grizzly bears fishing on ice is not something often heard about and very rarely witnessed. There have been observations of grizzlies appearing to use breathing holes to hunt for seals on ice of the far north, but actual ice fishing is not a well documented behavior. That is why this video taken this week from the frozen shores of the Snake River inside Grand Teton National Park is quite remarkable as it shows a grizzly bear attempting to ice fish. The bear looks to have been successful in its pursuit until the ice gives way under its considerable weight and it ends up in the water.

(http://www.autoadmit.com/thread.php?thread_id=5715957&forum_id=2:#48879581)